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Light and pH Cooperative Nanofluidic Diode Using a Spiropyran‐Functionalized Single Nanochannel
Author(s) -
Zhang Minghui,
Hou Xu,
Wang Jingtao,
Tian Ye,
Fan Xia,
Zhai Jin,
Jiang Lei
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201104536
Subject(s) - diode , spiropyran , materials science , nanotechnology , optoelectronics , photochromism
An artificial nanofluidic diode system is prepared (see figure), mimicking the light‐gated and pH‐tunable ion channels that play an important role in life sciences. When UV light is off, the nanochannel is in the closed state, analogous to a resistance. Under UV light irradiation and at pH 7, the current flows from the tip to the base, analogous to a diode; at pH 3, the situation (and the diode) is reversed.